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Math Help - Algebraic Proofs

  1. #1
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    Algebraic Proofs

    Using the statement vs reason chart and prove the following equation.

    Given: 2x = 12

    Prove: x = 6
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by magentarita View Post
    Using the statement vs reason chart and prove the following equation.

    Given: 2x = 12

    Prove: x = 6
    This is very short and simple.

    2x = 12 Given

    x= 6 Division property of equality

    Or you could do it this way:

    2x=12 Given

    \frac{1}{2}(2)x=\frac{1}{2}(12) Multiplication property of equality

    1x=6 \ \ Multiplicative Inverse and multiplication

    x=6 \ \Multiplicative Identity
    Last edited by masters; December 8th 2008 at 01:13 PM.
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  3. #3
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    ok.......

    Quote Originally Posted by masters View Post
    This is very short and simple.

    2x = 12 Given

    x= 6 Division property of equality

    Or you could do it this way:

    2x=12 Given

    \frac{1}{2}(2)x=\frac{1}{2}(12) Multiplication property of equality

    1x=6 \ \ Multiplicative Inverse and multiplication

    x=6 \ \Multiplicative Identity
    A very nice step by step reply.
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